arch/arm/cpu/armv8/zynqmp/cpu.c

/*
 * (C) Copyright 2014 - 2015 Xilinx, Inc.
 * Michal Simek <michal.simek@xilinx.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <asm/arch/hardware.h>
#include <asm/arch/sys_proto.h>
#include <asm/armv8/mmu.h>
#include <asm/io.h>

#define ZYNQ_SILICON_VER_MASK	0xF000
#define ZYNQ_SILICON_VER_SHIFT	12

DECLARE_GLOBAL_DATA_PTR;

static struct mm_region zynqmp_mem_map[] = {
	{
		.base = 0x0UL,
		.size = 0x80000000UL,
		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
			 PTE_BLOCK_INNER_SHARE
	}, {
		.base = 0x80000000UL,
		.size = 0x70000000UL,
		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
			 PTE_BLOCK_NON_SHARE |
			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
	}, {
		.base = 0xf8000000UL,
		.size = 0x07e00000UL,
		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
			 PTE_BLOCK_NON_SHARE |
			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
	}, {
		.base = 0xffe00000UL,
		.size = 0x00200000UL,
		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
			 PTE_BLOCK_INNER_SHARE
	}, {
		.base = 0x400000000UL,
		.size = 0x200000000UL,
		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
			 PTE_BLOCK_NON_SHARE |
			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
	}, {
		.base = 0x600000000UL,
		.size = 0x800000000UL,
		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
			 PTE_BLOCK_INNER_SHARE
	}, {
		.base = 0xe00000000UL,
		.size = 0xf200000000UL,
		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
			 PTE_BLOCK_NON_SHARE |
			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
	}, {
		/* List terminator */
		0,
	}
};
struct mm_region *mem_map = zynqmp_mem_map;

static unsigned int zynqmp_get_silicon_version_secure(void)
{
	u32 ver;

	ver = readl(&csu_base->version);
	ver &= ZYNQMP_SILICON_VER_MASK;
	ver >>= ZYNQMP_SILICON_VER_SHIFT;

	return ver;
}

unsigned int zynqmp_get_silicon_version(void)
{
	if (current_el() == 3)
		return zynqmp_get_silicon_version_secure();

	gd->cpu_clk = get_tbclk();

	switch (gd->cpu_clk) {
	case 0 ... 1000000:
		return ZYNQMP_CSU_VERSION_VELOCE;
	case 50000000:
		return ZYNQMP_CSU_VERSION_QEMU;
	case 4000000:
		return ZYNQMP_CSU_VERSION_EP108;
	}

	return ZYNQMP_CSU_VERSION_SILICON;
}